Eroare de compilare: main.cpp:5:5: error: 'int y1' redeclared as different kind of entity 5 | int y1; | ^~ In file included from /usr/include/features.h:490, from /usr/include/c++/12.2.1/x86_64-pc-linux-gnu/bits/os_defines.h:39, from /usr/include/c++/12.2.1/x86_64-pc-linux-gnu/bits/c++config.h:655, from /usr/include/c++/12.2.1/cassert:43, from /usr/include/c++/12.2.1/x86_64-pc-linux-gnu/bits/stdc++.h:33, from main.cpp:1: /usr/include/bits/mathcalls.h:224:1: note: previous declaration 'double y1(double)' 224 | __MATHCALL (y1,, (_Mdouble_)); | ^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:9:12: error: assignment of function 'double y1(double)' 9 | y1 = 13; | ~~~^~~~ main.cpp:10:17: warning: the address of 'double y1(double)' will never be NULL [-Waddress] 10 | cout << y1 << '\n'; | ^~ /usr/include/bits/mathcalls.h:224:1: note: 'double y1(double)' declared here 224 | __MATHCALL (y1,, (_Mdouble_)); | ^~~~~~~~~~ Non zero exit status: 1